Pet door



FIG. 1 is a top, front and left side perspective view of pet door, showing my new design;

FIG. 2 is a perspective view with open state of the door;

FIG. 3 is a bottom, rear and left side perspective view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a right side elevational view thereof;

FIG. 8 is a top plan view thereof;

FIG. 9 is a bottom plan view thereof;

FIG. 10 is a partial enlarged view of FIG. 1 ;

FIG. 11 is a partial enlarged view of FIG. 2 ; and,

FIG. 12 is a partial enlarged view of FIG. 3 .

The dot-dash broken line circles depict the limits of the enlarged views and form no part of the claimed design.

The broken lines depict portions of the pet door that form no part of the claimed design. 

CLAIM The ornamental design for a pet door, substantially as shown and described. 